Vacuum cleaner



FIG. 1 is an isometric view of a vacuum cleaner showing the claimed design.

FIG. 2 is a front elevation view of the vacuum cleaner of FIG. 1.

FIG. 3 is a rear elevation view of the vacuum cleaner of FIG. 1.

FIG. 4 is a left elevation view of the vacuum cleaner of FIG. 1.

FIG. 5 is a right elevation view of the vacuum cleaner of FIG. 1.

FIG. 6 is a top plan view of the vacuum cleaner of FIG. 1; and,

FIG. 7 is a bottom plan view of the vacuum cleaner of FIG. 1.

The broken lines represent environment that forms no part of the claimed design. 

The ornamental design for a vacuum cleaner, as shown and described. 